The phrase "alter this mix" is correct and usable in written English.
You can use it when referring to changing or modifying a combination of elements, such as ingredients in a recipe or components in a project.
Example: "To improve the flavor, you might want to alter this mix by adding more spices."
Alternatives: "modify this blend" or "adjust this combination."
Where Duran Duran had intended to see what would happen if you mixed the Sex Pistols and Chic, the Power Station decided to alter the mix: what would it sound like if you mixed Led Zeppelin and – wait for it – Chic, they wondered.
Damage to deep-ocean ecosystems could eventually alter the mix of nutrients and chemicals that well up from the depths.
Mr. Bush's proposal to alter the mix of Social Security benefits did not seem to sit well among many people over 65.
Other research indicates that glyphosate can alter the mix of bacteria and fungi that interact with plant root systems, making them more susceptible to parasites and pathogens.
But those accomplishments did not alter the mix of lagging growth, heavy debts and anxious voters that pushed European leaders to press for austerity.
In making a case against products spiked with antibacterials, he explained: "Like antibiotics, antibacterials can alter the mix of bacteria; they simultaneously kill susceptible bacteria and promote the growth of resistant strains.
"If a client wants a lower level of risk, for example, then we would alter the mix of asset classes and consider putting in more shorter-term corporate bonds," he explained.
We need to alter the mix of the teams depending on the challenges they face" On stop and search Brian has called for an end to the "targeting of black and Asian youth" and told me that when stop and search operations take place, they should as far as possible be conducted by officers who know the area concerned.
In a break with longstanding industry practices, Credit Suisse intends to alter the mix of salaries and bonuses for its top employees, tie the bonuses to a specific financial measure and effectively claw back the payouts if the bank's fortunes dim.
In assessing the Vermont law at issue Tuesday (Sorrell v. IMS Health, No. 10-779), which bars some but not all uses of prescription drug data, several justices indicated that they viewed government efforts to alter the mix of available information as constitutionally problematic.
